The general announcement can be found here: http://www.sencha.com/blog/introducing-sencha-touch-2-1-and-more

First off I want to say thanks to everyone who has helped us shake down Sencha Cmd v3.0! We wouldn't be where we are without all of the help we have received and it is greatly appreciated. If the bugs you have reported did not make the cut, fear not - the Cmd team is not going anywhere. :)

We will be moving on the 3.1 now with some exciting new stuff in store, so check back for updates on that.